New Hampshire StatutesCHAPTER 229 — HIGHWAY SYSTEM IN THE STATESection 229:1 Highways Defined.Section 229:2 Primary Highway System.Section 229:3 Turnpikes and System of Interstate and Defense Highways.Section 229:4 Secondary System.Section 229:5 Classification.Section 229:6 Roads Laid Out by Courts of Common Pleas or County Commissioners.